loading...
A Cross-Layer Optimized Error Recovery Mechanism for Real-Time Videoin Ad-Hoc Networks
Minneapolis, Minnesota July 12-July 15
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ICPADS.2006.1012th International Conference on Para ...
 This Article 
 
PDF
HTML
 
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
Ahmed Abd El Al, City University of New York, USA
Tarek Saadawi, City University of New York, USA
Myung Lee, City University of New York, USA
The increase in the bandwidth of wireless channels and the computing power of mobile devices increase the interest in video communications over ad-hoc wireless networks. However, the high error rate and the rapidly changing quality of the radio channels can be devastating for the transport of compressed video. In addition, the bounded playout delay for interactive video limits the effectiveness of retransmission-based error control. In this paper, we propose an error recovery mechanism for real-time video that combines forward error correction (FEC), and multi-path retransmission. Based on the sender to receiver route obtained from lower layers, as well as the video data content, the mechanism determines the allocation of error correction code, as well as the retransmission criteria. We evaluated the effectiveness of the mechanism under different network conditions. Simulation results show that the proposed hybrid error recovery mechanism maintains the video quality under different loss rates and mobility speeds, with less overhead compared to error recovery methods that depend only on fixed FEC allocation.
Citation:
Ahmed Abd El Al, Tarek Saadawi, Myung Lee, "A Cross-Layer Optimized Error Recovery Mechanism for Real-Time Videoin Ad-Hoc Networks," icpads, vol. 2, pp.77-82, 12th International Conference on Parallel and Distributed Systems - Volume 2 (ICPADS'06), 2006
Usage of this product signifies your acceptance of the Terms of Use.